Regulator



June 5. 1928. 1,672,786

' B. SLAGBOOM ET AL REGULATOR fi as iz'am zfjaazr Jamie? iqyao 11509 J[d&002/

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B. SLAGBOOM ET AL REGULATOR Filed Jan. 7, 1927 2 Sheets-Sheet 2 0024 5min J/qyaom [Jill/6 Jlayfioom INVENTOR ATTORNEY 2mm Sky VVITNESE:

Patented June 5, 1928.

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h uoaaon flied January 7,1927. ismal m. woman or a steam engine towgovern the speed of thesame whenrnnning idle, i. e,, should the same be run at QOO R, P. M., While operatively connected with some machine or driven means, a-nda breakage should occur in the driving belt or l ike part which might result in a speeding upiof theengine, the device willtautomatically operate to maintain the speed at 200 B. P; M, thereby re: in a y iu a h ne n which m ght occur by running the same at anrexcess pe d h le l qnne t d romi mac n driven thereby. A

Another object of the invention is the provision of an engine regulator which is automaticall controlled by the speedof the engine tsha t for retardin the control thr e; f t enein teh ul he a d haf rotate le an x s pee "for wh c t e regulator maybe set. a

With these andiother objects in view, the invention resides in certain novel construction andcomhinationand arrangement of parts, the essential feat-ures of which are hereinafter fully de scI;ibed,.-are particularly pointed out in the appended claims, and are illustrated in the accompanyingndrawing in which 1+ i F gur d n e at ona =v w f an nternal combustion engine withour improved regulator connected therewith.

Figure 2 an enlarged 3181131631 longitude inal sectional View through the regulator.

Figure 3 is a horizontal sectionalview on the line 3-3iof Figure-2.

Referring to the drawings by reference characters,the numeral designates our improved regulator in its entirety and which comprises a forked bracket 11 mounted on the casing of an internal combustion engine E. Avertical shaft :12 is rjoujrnalled in a bearing 13 provided in ,the lower arm of the bracket and which shagft has a cylinder 14 fixedly connected to its ipper end and a, bevelled gear l5'fixed to its lower end and which gear meshes with a bevelled. gear 16 connected tothe engineshait 17 whereby a rotary motion is imparted to the cylinder 14 the drive shaft of the engine. A

piston head 18 is slidably mounted within the cylinder 14 and rests upon a head of mercury M contained within the cylinder and being at a level to permit of a predetermined amount of vertical movement of the pistonhead with respect to the top end wall of the cylinder. The piston head :18 has its top face dished to provide, a well 19 whiclrcon municates with the under-face of the piston head by inclined ducts 20 through which the mercury is adapted to pass when the speed of the motor reaches a predetermined point. e the p en he hroug t p end. wall of thecylinder l4 and is slidably mounted in a bearing 22 carried by the u per arm. of the form of the bracket 11;

1 mp we l e h cy ind is prov d with air ducts i23 for relieving the pressure hb YQ th piston head! ,during upward vertita mW m et of th sa e M u ted i p n ,tl h ie ke 11 is e ond bra ket .24 which supports a cylinder 25 w ch is in mailer in diameter than the cylinder 14 at which is in axial alignment her w h andiwhi cy in e s p oy d with a remoyableplq te QGcovering the top an o h same.

he upper end of the p ston rod @lpasses {through the cylinder 25 and tent through and-above the cover plate 26. The piston rod has an elongated slot27 provided therein and through which apin 28 extends,. which pin is carried the cover plate 26 for permitting a predetermincd amount of upward movement of the pisto n rod 21- ,bi t iwhich holds the rod ngain st turning movement. Slidahly mounted -withinthe cylinder 25 and. movable upwardly with the piston rod 2-1 is a piston 29 and which piston has its side Walls spaced jrom the piston rod 21,to provide a chamber 30 therebetween and which contains a quantity of mercury M, thelevel of which egtends above the piston 29 and into an enla ged ehamber- ZBI at the top.of thecy-linder. Ihe weight of. the mercury M holds the piston ead l8 down ml the head' of mercury and by varying the quantity of mercury within the cylinder 25, it is possible t v ryth wi at Whi h-th reg at wi l a om tically pe a h p1 on29 is A piston rod 21 extends For controlling the volume of mercury M within the cylinder 25, there is provided a horizontally disposed auxiliary cylinder 33 having communication with the enlarged chamber 31 by a duct 34 which enters at the bottom of said chamber. A piston 35 is slidably mounted within the cylinder 33 for varying the distance between the inner end of the piston and the end wall of the cylinder so as to regulate the storing capacity for the mercury M for controlling the weight of the same upon the piston-29. A packing gland 26 seals the joint between the piston 35 and cylinder 33, and which piston is slidablc back and forth within the cylinder by a link 37 which is pivotally connected to one end of an actuating or control lever 38, said lever being pivoted between its ends upon a bracket 39, which bracket is sup orted from the bracket 24. The free end oi the handle serves as a manipulating portion 40 by which the lever 'may be actuated. The bracket 39 is provided with a graduated dial indicative of R. P. M.s and when the lever is set to a radial position in register with respective graduations, the same will indicate at which speed the engine regulator will automatically operate. It will be appreciated that when the piston 35 is moved outward to enlarge the area between the inner end of the piston and the end wall of the cylinder, the same will drain the cylinder 25 of a certain amount of mercury M and will permit of the operation of the regulator at a reduced speed than if the entire volume of mercury M was acting upon the piston head 18.

The top end of the piston rod 21 is con nected with a push rod 41 which connects to a bell crank lever 42 by reason of a pin and slot connection 43 and which lever in turnhas connection with a connecting rod 44 leading to an actuating arm 45 of the butterfly valve 46 of the carburetor 47 which forms a part of the engine E.

In operation, we shall presume that the engine E is running at a speed of 200 R. P. M. at which time the engine is operatively connected up with some piece of machinery or apparatus to be driven. The

lever 38 has of course been set to a position to cause the regulator to operate when the revolutions of the engine shaft exceeds 200 R. P. M. by regulating the load of mercury M within the cylinder 25. In the event that some driving part of the machine should break such as the driving belt between the engine and the machine, the engine will of course increase in speed due to the fact that it is idle. As the speed increases, the cylinder 14 is rotated at a higher speed which causes the body of mercury M to lift the piston head 18 due to the centrifugal motion as it will be appreciated that the mercury will tend to be forced outward and upward toward the walls of the c linder consequently causing the lifting of t e piston head 18 against the weight of the body of mercury M within the cylinder 25. The circulation of the mercury M within the cylinder 14 tends to spread against the under face of the iston head when the centrifugal action reac es a certain point, which relieves any further movement of the piston head, as the same is only adapted to be lifted a slight distance as shown in dotted lines in Figure 2 of the drawings. As the piston head 18 moves upward, the piston rod 21 which carries the piston 29 also moves up causing the raising of the level of the mercury M within the chamber 31, but the distance between the normal level of the mercury and the top of the cylinder is sufiicient to accommodate the rise due to the movement of the piston rod and the top cover plate 26 of the cylinder 25 is provided with air ducts 48 for relieving the air pressure within the enlarged chamber as the mercury rises therein. As the piston rod 21 moves upward, it of course, rocks the bell crank lever 42, pulling upon the connecting rod 44 which actuates the ,butterfl valve 47 to reduce the flow of gas to t e carburetor of the engine which accordingly reduces the speed of the same.

Although we have specifically described the used the regulator in connection with an internal combustion engine, it will be appreciated that the same may be used with a steam engine and the piston rod 21 operatively connected with the throttle for controlling the speed of the engine.

While we have described what we deem to be the most desirable embodiment of our invention, it is obvious that many of the details may be varied without in any way departing from the spirit of our invention, and we therefore do not limit ourselves to the exact details of construction herein set forth nor to anything less than the whole of our invention limited only by the appended claims.

What is claimed as new is 1. An engine regulator comprising a r0tat-' able cylinder adapted to be rotated by the drive shaft of an engine, a quantity of mercury contained within saidcylinder, a piston head within said cylinder and supported upon the top of said mercury, a rod extending from said piston head and adapted to be operatively connected with the control device of an engine, and weighted means acting upon said rod to hold said piston head down upon said body of mercury whereby rotation of said cylinder at a predetermined rate of 5 ed will cause said body of mercury to lift said headand rod against said weighted means by reason of the centrifugal action of said mercury, said means including a second cylinder, a piston head carried by said shaft and movable within said second cylinder, and a body of mercury contained within said second cylinder and acting upon said second piston.

2. An engine regulator comprising a rotatable cylinder adapted to be rotated by the drive shaft of an engine, a quantity of mercury contained within said cylinder, a piston head within said cylinder. and supported upon the top of said mercury, a rod extending from said piston head and adapted to be operatively connected with the control device of an engine, and weighted means acting upon said rod to hold said piston head down upon said body of mercury whereby rotation of said cylinder at a predetermined rate of speed will cause said body of mercury to lift said head and rod against said Weighted means by reason of the centrifugal action of said mercury, said means including a second cylinder, a piston head carried by said shaft and movable within said second cylinder, and a body of mercury contained within said second cylinder and acting upon said second piston and means for varying the quantity of mercury in said second cylinder.

3. An engine regulator comprising a rotatable cylinder adapted to be rotated by the drive shaft of an engine, a quantity of mercury contained within said cylinder, a piston head within said cylinder and supported upon the top of said mercury, a rod extending from said piston head and adapted to be operatively connected with the control device of an engine and weighted means acting upon said rod to hold said piston head down upon said body of mercury whereby rotatlon of said cylinder at a predetermined rate of speed will cause said body of mercury to lift said head and rod against said weighted means by reason of the centrifugal action of said mercury, said means including a second cylinder, a piston head carried by said shaft and movable within said second cylinder, and a body of mercury contained within said second cylinder and acting upon said second piston and means for varying the quantity of mercury in said second cylinder, said means including a compartment in communication with said second cylinder, and a member slidable within said compartment for enlarging or reducing the capacity of the same. In testimony whereof we hereby aflix our signatures.

BASTIAAN SLAGBOOM. SANDER SLAGBOOM. LUWE SLAGBOOM. 

